A connection structure and method for a coil bobbin and a flat quick-connect terminal

Abstract

The invention discloses a connection structure of a coil bobbin and a flat quick-connect terminal and a method thereof. The connection structure comprises the coil bobbin and a flat-shaped inserting sheet. The two sides of the bottom part of the inserting sheet are respectively provided with a wing sheet. The tail ends of the two wing sheets are respectively provided with a bending part which bends along a thickness direction. The coil bobbin is provided with a slot along a vertical direction, and the slot is adaptive to the bending parts of the two wing sheets of the inserting sheet. The bottom part of the slot is provided with shoulders. The inserting sheet is matched in the slot of the coil bobbin in an inserting way. The bending parts of the two wing sheets of the inserting sheet bend and deform under the effect of opposite inward pull force and are clamped on the shoulders. The structure of the coil bobbin and the inserting sheet is improved so that firm connection of the inserting sheet and the coil bobbin can be guaranteed, and the possibility of damage to the coil bobbin can be eliminated. Besides, a core pulling surface does not need to be additionally arranged on the coil bobbin mould so that production of multiple pieces through one mould can be realized.

Description

technical field [0001] The invention relates to a contactor, in particular to a connection structure and method for a coil skeleton and a flat quick-connect terminal. Background technique [0002] A contactor refers to an electrical appliance that uses a coil to flow through a current to generate a magnetic field to close the contacts in industrial electricity to control the load. When the contactor coil is energized, the coil current will generate a magnetic field, and the generated magnetic field will cause the static iron core to generate electromagnetic attraction to attract the moving iron core, and drive the contactor contact to move, the normally closed contact is disconnected, and the normally open contact is closed. linked. When the coil is powered off, the electromagnetic attraction disappears, and the armature is released under the action of the release spring to restore the contacts, the normally open contacts are disconnected, and the normally closed contacts a...

AI Technical Summary

Problems solved by technology

[0004] In the connection structure between the coil bobbin and the insertion piece in the prior art, one is that a protrusion is provided at the bottom of the insertion piece, and a slot is provided in the coil bobbin, through the protrusion at the bottom of the insertion piece and the slot of the coil bobbin The interference fit achieves a relatively tight connection. However, this connection structure will still have obvious displacement when the insert is subjected to a pull-out force exceeding 100N, which may cause the enameled wire of the coil winding to break

The other is that there are protrusions on the bottom of the insert, and inverted teeth on both sides of the insert. The protrusions at the bottom of the insert and the interference fit between the inverted teeth on both sides and the slots of the coil bobbin are used to achieve a relatively tight fit. Connection, however, due to various reasons such as materials and parts processing accuracy, the firmness of this connection structure cannot reliably meet the requirement that the pull-out force is greater than 100N. It is often necessary to reinforce the connection by dispensing, which is laborious and time-consuming, and not only increases the cost , also affects product delivery

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